Inside the ultimate bouncy castle: Designers create 32ft-high inflatable cube filled with a matrix of string you can climb on

A group of designers have created the ultimate bouncy castle - with the help of a bit of string theory.

They created a 32-foot high inflatable cube that has dozens of lengths of string inside and it’s proved to be huge fun to clamber around in.

unusual project, called String Prototype, has lengths of string cables threaded inside which can take the weight of a person.

The designers behind the unique project are Croatian and Austrian collective Numen, founded by Sven Jonke, Christoph Katzler and Nikola Radeljkovic who specialise in large-scale interactive projects.

When the inflatable cube deflates the ropes get loose and lay on the ground, which means it can be easily packed away.

But when the object inflates, the ropes tense to form a perfect line, strained enough to carry the weight of a human being.

A spokesperson from Numen said: ‘Bodies entrapped in a 3D grid, flying in unnatural positions throughout superficial white space.‘The impossibility of perception of scale and direction results in simultaneous feeling of immenseness and absence of space.’

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One of Numen's founders Christoph Katzler (left) with some test pilots inside the String Prototype